This EBC S4 Redstuff Pad & USR Rotor Kit is the perfect upgrade for your vehicle. It features precision-machined slots to remove dust, dirt, and debris from the braking surface. The slots also help to improve brake pad bite, ensuring maximum stopping power. The rotors are made from a high-grade cast iron for superior strength and durability. They are also coated with a black zinc finish for corrosion resistance. With this set, you'll get two slotted rotors and all necessary hardware for a complete installation.